Which of the following proteins is categorized as a monolayer-associated protein? COX-1 (in the lumenal leaflet of the smooth endoplasmic reticulum) the Ras protein (lipid-linked to the inner plasma membrane) band 3.0 protein (in the red blood cell membrane) glycophorin A (in the red blood cell membrane) cytochrome c (in the mitochondrion)

Vesicles forming at the plasma membrane, or at the trans face of the Golgi, and destined only to fuse with endosomes and lysosomes, are generally not associated with which of the following proteins? dynamin proteins cargo receptor proteins clathrin proteins collagen proteins adaptin proteins

After pinocytic vesicles fuse with early endosomes, one possible fate of both cargo receptors and their cargo could be translocation to a new plasma membrane location, followed by exocytosis of the cargo molecule, which commonly occurs in human gut epithelial cells carrying which cargo? the human immunodeficiency virus (HIV) the glucose molecule the low density lipoprotein (LDL) the influenza virus the cholesterol molecule

the structure of the plasma membrane is best described as: two layers of phospholipids stacked on top of each other, with proteins embedded in the phospholipids Oa single layer of proteins and polysachharides mixed together two layers of proteins stacked on top of each other O many sheets of peptidoglycan stacked on top of each other O one layer of triglycerides on top of a layer of proteins

If you did a classic Pulse-Chase experiment to follow the path of a secreted protein, and you forgot to do the Chase, which of the following would you observe?     No radioactivity would be seen in any of the structures.     Radioactivity would increase first in rough ER, then Golgi Complex, then secretory vesicles, but it would remain high in all, never decreasing.     Nothing would change     Radioactivity would increase in all 3 structures simultaneously and stay high.

Proteins that do not possess a signal sequence of substantially non-polar amino acids, and that do not possess a signal sequence of several positively-charged amino acids, are destined for which cellular site? the mitochondria the peroxisome the chloroplast the nucleus the cytosol

Please explain with detail

Which of these structures would you expect to find as part of the transmembrane portion of an integral membrane protein? Structure B would be part of the transmembrane domain of an integral membrane protein. Structure C would be part of the transmembrane domain of an integral membrane protein. Structure A would be part of the transmembrane domain of an integral membrane protein.

Ran is a major player in the process of nucleocytoplasmic transport via the nuclear pore. Because net Ran movement simply follows a concentration gradient, what maintains the Ran gradient across the nuclear membrane? Options:   the concentration levels of cargo in the nucleus to be exported   GTP concentrations in the nucleus   the correct positioning of the GEF and GAP with respect to the nuclear envelope   the interaction of exportin and importin with their cognate substrates   none of the above

Choose all true statements about the difference between translation at free ribosomes versus bound ribosomes. - Free ribosomes are made in cytoplasm, whereas bound ribosomes are made in the nucleus. - Free ribosomes produce proteins in the cytosol, whereas bound ribosomes produce proteins inside the nucleus. - Bound ribosomes produce proteins that are exported from the cell, whereas free ribosomes make proteins for the nucleus.